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My Trek full sus has a BB30. It's about 9 months old, never seen a dry ride and has done plenty miles. It developed a creak after about 6 months, but still spins OK. So, I'm not mega impressed, but seems to be lasting if nothing else. I was getting about a year out of XT HTII BBs before this so seems on a par really.
The other issue with pressfit is if your bearing seizes it can spin in the frame reaming it out and pretty much ruining it . Trek can actually supply a slightly oversize bearing that you can use if this happens so it's not as though manufacturers are unaware of the problems caused .
Surely the main point of them is you can't cross thread your frame?
It probably won't surpise anyone if I tell you that I had to replace the PF BB on my Zesty after 6 months. That was a year ago, and it's just starting to go again. I've made this one last longer by inverting the bike after wet rides, and sharing the load by using my old Scott G-Zero in the wettest weather.
I will ask my local LBS to fit a Hope replacement this time, but my main worry is that the Hope item won't last any longer than the Shimano POS.
Well I feel silly now for posting my last thread 😐
Eve if the Hope one doesn't last any longer, the only thing to replace will be the bearings and that should be far cheaper than a whole new unit (even non-Hope ones)...the point with the likes of the Hope is once it is fitted you leave it in-situ and just replace the bearings once they are knackered...so should be a much easier job (and hopefully needing done far less often)...
Saw the vid for Hope BSA cups, and out of the frame that looked pretty easy. In situ in the frame of course the tools won't fit, so that just means spending dough on the park tool remover tool and a press (just like BB30, in effect).
Had a look at the Superstar remover tools. Only 20 quid for (yet) another tool. Only a few bob more expensive than a Shimano BSA screw in BB.